package com.sinoglobal.ningxia.qr;

import android.annotation.SuppressLint;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import com.sinoglobal.ningxia.R;

public class UriUtil {
	public static final boolean isChineseCharacter(String chineseStr) {
		char[] charArray = chineseStr.toCharArray();
		for (int i = 0; i < charArray.length; i++) {
			// 是否是Unicode编码
			if ((charArray[i] >= '\u0000' && charArray[i] < '\uFFFD') || ((charArray[i] > '\uFFFD' && charArray[i] < '\uFFFF'))) {
				continue;
			} else {
				return false;
			}
		}
		return true;
	}

	/**
	 * Get a file path from a Uri. This will get the the path for Storage Access
	 * Framework Documents, as well as the _data field for the MediaStore and
	 * other file-based ContentProviders.
	 * 
	 * @param context
	 *            The context.
	 * @param uri
	 *            The Uri to query.
	 * @author paulburke
	 */
	@SuppressLint("NewApi")
	public static String getPath(final Context context, final Uri uri) {

		// final boolean isKitKat = Build.VERSION.SDK_INT >=
		// Build.VERSION_CODES.KITKAT;

		// DocumentProvider
		// if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
		// // ExternalStorageProvider
		// if (isExternalStorageDocument(uri)) {
		// final String docId = DocumentsContract.getDocumentId(uri);
		// final String[] split = docId.split(":");
		// final String type = split[0];
		//
		// if ("primary".equalsIgnoreCase(type)) {
		// return Environment.getExternalStorageDirectory() + "/" + split[1];
		// }
		//
		// //handle non-primary volumes
		// }
		// // DownloadsProvider
		// else if (isDownloadsDocument(uri)) {
		//
		// // final String id = DocumentsContract.getDocumentId(uri);
		// final Uri contentUri =
		// ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"),
		// Long.valueOf(id));
		//
		// return getDataColumn(context, contentUri, null, null);
		// }
		// // MediaProvider
		// else if (isMediaDocument(uri)) {
		// // final String docId = DocumentsContract.getDocumentId(uri);
		// // final String[] split = docId.split(":");
		// // final String type = split[0];
		//
		// Uri contentUri = null;
		// if ("image".equals(type)) {
		// contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
		// } else if ("video".equals(type)) {
		// contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
		// } else if ("audio".equals(type)) {
		// contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
		// }
		//
		// final String selection = "_id=?";
		// final String[] selectionArgs = new String[] { split[1] };
		//
		// return getDataColumn(context, contentUri, selection, selectionArgs);
		// }
		// }
		// // MediaStore (and general)
		// else if ("content".equalsIgnoreCase(uri.getScheme())) {
		// return getDataColumn(context, uri, null, null);
		// }
		// // File
		// else if ("file".equalsIgnoreCase(uri.getScheme())) {
		// return uri.getPath();
		// }

		return null;
	}

	/**
	 * Get the value of the data column for this Uri. This is useful for
	 * MediaStore Uris, and other file-based ContentProviders.
	 * 
	 * @param context
	 *            The context.
	 * @param uri
	 *            The Uri to query.
	 * @param selection
	 *            (Optional) Filter used in the query.
	 * @param selectionArgs
	 *            (Optional) Selection arguments used in the query.
	 * @return The value of the _data column, which is typically a file path.
	 */
	public static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {

		Cursor cursor = null;
		final String column = "_data";
		final String[] projection = { column };

		try {
			cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
			if (cursor != null && cursor.moveToFirst()) {
				final int column_index = cursor.getColumnIndexOrThrow(column);
				return cursor.getString(column_index);
			}
		} finally {
			if (cursor != null)
				cursor.close();
		}
		return null;
	}

	/**
	 * @param uri
	 *            The Uri to check.
	 * @return Whether the Uri authority is ExternalStorageProvider.
	 */
	public static boolean isExternalStorageDocument(Uri uri) {
		return "com.android.externalstorage.documents".equals(uri.getAuthority());
	}

	/**
	 * @param uri
	 *            The Uri to check.
	 * @return Whether the Uri authority is DownloadsProvider.
	 */
	public static boolean isDownloadsDocument(Uri uri) {
		return "com.android.providers.downloads.documents".equals(uri.getAuthority());
	}

	/**
	 * @param uri
	 *            The Uri to check.
	 * @return Whether the Uri authority is MediaProvider.
	 */
	public static boolean isMediaDocument(Uri uri) {
		return "com.android.providers.media.documents".equals(uri.getAuthority());
	}
}
